{"id":"CVE-2022-49034","summary":"sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK\n\nWhen CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected,\ncpu_max_bits_warn() generates a runtime warning similar as below when\nshowing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit)\ninstead of NR_CPUS to iterate CPUs.\n\n[    3.052463] ------------[ cut here ]------------\n[    3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0\n[    3.070072] Modules linked in: efivarfs autofs4\n[    3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052\n[    3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000\n[    3.109127]         9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430\n[    3.118774]         90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff\n[    3.128412]         0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890\n[    3.138056]         0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa\n[    3.147711]         ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000\n[    3.157364]         900000000101c998 0000000000000004 9000000000ef7430 0000000000000000\n[    3.167012]         0000000000000009 000000000000006c 0000000000000000 0000000000000000\n[    3.176641]         9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286\n[    3.186260]         00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c\n[    3.195868]         ...\n[    3.199917] Call Trace:\n[    3.203941] [\u003c90000000002086d8\u003e] show_stack+0x38/0x14c\n[    3.210666] [\u003c9000000000cf846c\u003e] dump_stack_lvl+0x60/0x88\n[    3.217625] [\u003c900000000023d268\u003e] __warn+0xd0/0x100\n[    3.223958] [\u003c9000000000cf3c90\u003e] warn_slowpath_fmt+0x7c/0xcc\n[    3.231150] [\u003c9000000000210220\u003e] show_cpuinfo+0x5e8/0x5f0\n[    3.238080] [\u003c90000000004f578c\u003e] seq_read_iter+0x354/0x4b4\n[    3.245098] [\u003c90000000004c2e90\u003e] new_sync_read+0x17c/0x1c4\n[    3.252114] [\u003c90000000004c5174\u003e] vfs_read+0x138/0x1d0\n[    3.258694] [\u003c90000000004c55f8\u003e] ksys_read+0x70/0x100\n[    3.265265] [\u003c9000000000cfde9c\u003e] do_syscall+0x7c/0x94\n[    3.271820] [\u003c9000000000202fe4\u003e] handle_syscall+0xc4/0x160\n[    3.281824] ---[ end trace 8b484262b4b8c24c ]---","modified":"2026-04-02T08:27:14.520555Z","published":"2024-12-27T13:49:10.297Z","related":["USN-7276-1","USN-7277-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49034.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/09faf32c682ea4a547200b8b9e04d8b3c8e84b55"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2b6b8e011fab680a223b5e07a3c64774156ec6fe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/39373f6f89f52770a5405d30dddd08a27d097872"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3c891f7c6a4e90bb1199497552f24b26e46383bc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/701e32900683378d93693fec15d133e2c5f7ada2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/77755dc95ff2f9a3e473acc1e039f498629949ea"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8fbb57eabfc8ae67115cb47f904614c99d626a89"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e2b91997db286a5dd3cca6d5d9c20004851f22eb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f8f26cf69003a37ffa947631fc0e6fe6daee624a"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49034.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49034"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"},{"fixed":"8fbb57eabfc8ae67115cb47f904614c99d626a89"},{"fixed":"f8f26cf69003a37ffa947631fc0e6fe6daee624a"},{"fixed":"77755dc95ff2f9a3e473acc1e039f498629949ea"},{"fixed":"e2b91997db286a5dd3cca6d5d9c20004851f22eb"},{"fixed":"2b6b8e011fab680a223b5e07a3c64774156ec6fe"},{"fixed":"09faf32c682ea4a547200b8b9e04d8b3c8e84b55"},{"fixed":"39373f6f89f52770a5405d30dddd08a27d097872"},{"fixed":"701e32900683378d93693fec15d133e2c5f7ada2"},{"fixed":"3c891f7c6a4e90bb1199497552f24b26e46383bc"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49034.json"}}],"schema_version":"1.7.5"}